Grinding-machine



a. c. KIMMEL.

GRIND|NG MACHINE.

APPLICATION FILED APR.15,1918.

Patented Apr. 13, 1920.

4 SHEETSSHEET I.

Jnyenl'orf M0 I Worhcys..

35 C. KIMMEL;

GRINDING MACHINE. APPLICATION FILED APR. I5. 1918.

Patented A r. 13, 1920.

4 SHEETSSHEET -2- maam [urea/a7:

ii/always.

G. C. KIMMEL. enmome MACHLNE. APPLICATION FILED AER. 15, 1-913.

' Patented Apr. 13, 1920.

4 SHEETS-SHEET 3.

lnunziaf.

S-SHEETA.

G. C. KIMMEL.

GRINDING MACHINE.

APPLICATION FILED APR. I5, 1918.

Patented 4 SHEET I free/72 30/.

$1 I w M 1 w. W E 3 L I the carriage 7, it being laterally retained by a beveled .journal ring 26 lixed to the carriage and held in close contact with the surface-of the 'arriage by a split retaining collar 27 secured to the carriage by screws 28' (see Fig. 2). In the bearing 2'.) of the tool-head is journaled a grinding wheel a indle' 30 havnn an overhangin drive pulley 31 fixed to one end, the opposite end carrying a grinding wheel 32. A housing 33 ineloses a drive pulley 31 and the spindle 30 is driven by a belt 3% engaging over the pulley 31 and leading downward into the interior of the frame. The belt is guided by two guide rollers 35, 36, journaled on the turn-table and engages over a drive Wheel 36 secured to a power shaft 37 journaled in the lower portion of the frame. ()ne of the belt runs is entrained around a pair of belt tightening pulleys 38, 39, carried by a pair of rods 40, 41, depending from the carriage 7. I

The turn-table tool-head 25 is normally locked in position to insure a true parallel alinement of its spindle 30 with the ways 5, 6, of the frame, by a spring pressed plun gel 45, (see Figs. 1, 2, 5). The plunger 45 is mounted to slide in a vertical bore in the carriage 7 and bracket 18 and is provided With a tapered nose, adapted to engage in a correspondingly tapered lock recess 40 in the turn-table 25. To guard against the wearing of the parts to a point of imperfeet operation and to facilitate their convenient removal. I form the recess 46 in a steel collar insert i7 seated in the. table against a Washer 48. The washer *8 has a screw-threaded bore into which a correspondingly screw-threaded tool may be engaged to force or pull out the collar insert 47. The upper portion of the vertical bore in the carriage is also provided with a steel sleeve 49 as a protection against undue wear. The plunger 45 is notched as at 50 to form a beveled shoulder 51, which is engaged by the beveled nose 52 of a plunger operating bar 53 as thecarriage 7 is returned to normal position. The rod 53 is fixed to a bracket secured to the end wall 4 of the frame and is guided in a channel 55 formed in the carriage 7.

In Fig. l, the plunger -15 is shown in retracted position unlocking the turn-table tool-head 25. A further return movement of the carriage will not affect the plunger but when the carriage is fed toward the work, the plunger 45 will become disengaged from the bar 53 and be spring-pressed up ward into the lock recess 46 of the turntable.

To oscillate the tool-head to swing the grinding-wheel backward when the carriage 7 nears the end of its return travel. I provide a toothed rack bar or oscillator 60 slidably retained on the front upper surface of the carriage by the retaining collar '27 and operating in a channel (31 therein. The teeth of the rack bar (-0 mesh with teeth formed on the peripheral edge of the turntable and the opposite end of the bar 60 is adapted to contact with an abutment surface (52 ot' the stationary bracket- 54 near the end of the return travel of the carriage 7 to hold the bar (30 stationary, after which the final portion of said return travel of the carriage will cause the turn-table,tool-head 25 to be oscillated.

For holding the rack-bar (30 statio nary during the first part of the forward carriage feed, to restore the turn-table to norlnal position, I provide a retaining device ongravity latch '70 which is pivoted on the hal- (50 and has a hooked end 71, adapted to engage a projection 72 formed on the bracket 5%, (see- Fig. 5). The opposite weight end of the latch is provided with a beveled shoulder 73 and a. beveled nose stud H fixed on the carriage T in alinement with the shoulder 73 oi the latch 70 is adapted to engage and rock the latch to disengage its hooked end 71 from the'projection T2. The stud H is so locacd on the carriage 7 that its engagement with the latch will take place immediately after the turntable .25 is restored to normal position and the abutment surface (3:2. ot' the bracket 54. is so lo catcd as to allow the turntable lock plunger 45 to be withdrawn from the table engagement by the plunger operating bar 53, before said abutmcnt suriacc arrests the rack bar (50.

To limit the downward movement of the weight cnd ot' the latch 70. so that it will not drag on the carriage T, i. provide a stud so fixed on the rack-bar (it) and projecting into an enlarged bore 81 in the latch 70.

lo relieve the turn-table lock plunger 45 ot' the strains incident to a grinding op cration. l providc an abutment arm 85 extending from the turn-table 25 and engaging an adjustable stop stud 86 mounted in a leg b? projecting upwardly from the carriage 7.

The circulating lubricating system comprises a supply reservoir casing 90 projecting from the back frame. wall 2 and forming therewith a supply reservoir 103 having a coter plate 91. Supported on the cover plate 91 and depending into the supply reservoir is a centrifugal pump 92 having a discharge conduit 93, extended upwardly through said cover and connecting with the distributing conduits ill, 95. The conduit 9i is supported in a bracket 96 adjustably attached to the cover plate the lubricant to flow on the of the work. The conduit is supported in a bracket 97 adjustably attached to the head-stock carriage 10 and extends through the hollow head-stock spindle 15, conveying 91 and conveys exterior surface the lubricant to flow on the interior surface of the work.

The pump 92 is driven by a belt 98 engaging a belt pulley 99 on a power shaft 100 and entrained over a pair of guide' settling basin 104 formed bythe front and back framewalls 1 and 2 and by partition walls 105, 106, 107. An overflow aperture 108 leading into the supply reservoir 103 is formed in the back wall 2 and supported near the top of the frame over the settling basin is a strainer plate 109. The forward end of the tool carriage 7 is provided with a marginal wall 110 terminating at a drain spout 111 and the upper surface slopes toward said spout to drain the lubricant flowing thereon into the settling basin.

n machines of this character it is desirable that some means be provided for protecting the main slide-ways 5, 6, from 1n-- grinding or otherwise, and in the v present invention I have provided inwardly j y y and downwardly inclined cover plates 115,

116,-extended the full length of the ways. These plates are secured to the front and sufiicient back frame walls 1, 2, and are of width to fully cover their respective slideways, servin also to entrain the lubricant into the settllng basin 104.

Having described my invention, I claim:

1. In a machine of the class described comprising a bed and a reciprocating tool carriage in combination therewith, an oscillating tool-holder journaled on the carriage, means on the bed, carriage and tool-holder coiirdinately operated by the carriage travel, to aline the tool in work engaging position "during the forward carriage feed and to swing the tool to inoperative position during the retractive carriage travel, and means for locking and releasing the tool-holder.

2. A machine of the class described comprising a frame, a carriage slidably mounted thereon, a turn-table tool-head journaled on the carriage, meansfor translating the carriage, a device for oscillating the tool-head by the translation of the carriage, and a work carrying head mounted upon said frame translatable transversely to said carriage and carrying a rotatable work supporting spindle.

3. A machine of the class described comprising a frame, a carriage slidably mounted thereon, a turn-table tool-head journaledon the carriage, means for translating the carriage, a device for oscillating the tool-head, means for locking the tool-head against oscillation, and a device for disabling said lock means previous to a tool-head oscillation.

4. A machine of the class described comprising a frame, a slidable carriage, a turntable tool-head journaled thereon, means for translating the carriage, separate means for oscillating the tool-head, a lock for the toolhead, devices for disabling said lock for subsequent tool-head oscillation, and a work carrying head mounted upon said frame translatable transversely to said carriage.

5. A machine ofthe class described comprising a frame, thereon, atom-table tool-head supported on the carriage and provided with a lock recess,

a carriage slidably mounted a lock plunger normally engaging said recess, a plunger operating member fixed on the frame, a device for oscillating the toolhead, and means'for translating the carriage to retract the lock plunger from engagement with the lock recess for subsequent tool-head oscillation.

6. A machine of the class described comprising a frame, a carriage slidably mounted thereon, a turn-table tool-head supported on the carriage, a tool-head oscillator carried by the carriage and adapted to engage the frame during a retractive translation of the carriage to oscillate the tool-head, a retaining device for arresting the oscillator during a reverse carriage translation to normalize the tool-head, means for disabling said retaining device when the tool-head is normalized, and means for translating the carriage.

7. A machine of the class described ,comprising a frame, 'a carriage slidably mounted thereon, a turn-table tool-head supported on the carriage, a tool-head oscillator, a lock for the tool-head, a retaining device for the oscillator, a trip for the retaining device, and means for translating the carriage.

8. A machine of the class described comprising a frame, acarriage slidably mounted thereon, a turn-table tool-head supported on the carriage, means for translating the carriage, a lock for retaining the tool-head in normal position, and devices functioned by first normalizing and subsequently locking the tool-head during a reverse carriage translation 9. In a machine of the character described, a base frame, a work-carrying head mounted upon said base frame or casing translatable upon said; frame toward and from said work-carrying head, a tool sup porting head mounted on said-carriage and having a spindle carrying a rotary tool and driving means therefor, said tool-holding head mounted for oscillation on an axis angular to the axis of the tool spindle, and means for oscillating said tool supporting head.

10. In a machine of the character described, arail base frame, a work-carrying a rotatable work-holding spindle, a carriage translatable. on said frame toward and from the work-holding spindle, longitudinal with the axis of said spindle, a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor, the spindle normally coaxial with said work. holding spindle, said tool holding head mounted for oscillation on an axis angular to the axis of the tool spindle. for-swinging the spindle horizontally angular to the axis of said work holding spindle, and means for oscillating said tool supporting head.

11. In a machine of the character described, a base frame, a work carrying head mounted upon said base frame or casing translatable upon said-frame toward and from said work carrying head, a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor. said tool holding head mounted for oscillation on an axis angular to the axis of the tool spindlt, means for oscillating said tool supporting head, and means for locking said tool supporting head to the carriage against oscillation.

12. In a machine of the character described, a rail'base frame, a work'carrying head mounted upon said base frame, having a rotatable work holding spindle, a carriage translatable on said frame toward and from the work holding spindle, longitudinal with the axis of said spindle. a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor, the spindle normally coaxial with said work holding spindle, said tool holding head mounted for oscillation on an axis angular to the axis of the tool spindle. for swinging ltllQ spindle horizontally angular to the axis of said work holding spindle. means for oscillating said tool supporting head. and means for locking said tool supporting head to the carriage against oscillation.

13. In a machine of the character described, a base frame, a work carrying head mounted upon said base frame or casing. translatable upon said frame toward and from said work carrying head, a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor, said tool holding head mounted for oscillation on an axis angular to the axis of the tool spindle. a rack member cooperating with said tool supporting head for oscillating the same, automatically operated at a predetermined point of the retreat movement of said carriage.

1.4. In a machine of the character described, a base frame, a work carrying head mounted upon said base frame or casing translatable upon said frame toward and from said work carrying head, a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor, said tool holding head mounted for oscillation on an angular to the axis of the tool spindle. and meanscooperating with said tool supporting head operated by the movements of the slide within a retracted section. of carriage travel from the work carrying head, for alternately swinging said tool holding head.

15. In a machine of the character described, a rail base frame, a work carrying head mounted upon said base frame, having a rotatable work holding spindle, a carriage t 'anslatable on said frame toward and from the work holding spindle, longi tudinal with the axis of said spindle, a tool supporting head mounted on said carriage and having a spindle carrying a rotary tool and driving means therefor, the spindle normally coaxial with said work holding spindle, said tool holding head mounted for oscillation on an axis angular to the axis of the tool spindle, for swinging the spindle horizontally angular to the axis of said work holding spindle and said rotary tool to a safety zone, and mean cooperating with said tool supporting head during the carriage travel within retracted limits of the carriage travel for automatically alternately swinging said tool supporting head.

16. In a machine of the character described. a base frame, a carriage translatable on said frame. a tool supporting (head mounted on said carriage having a spindle carrying a rotary tool and driving means therefor, a transmissionsupporting frame depending from and carried by Stllk carriage, transmission means carried by said supporting frame in I driving connection with said tool driving means of the spindle.

17. In a machine of the character described, a hollow base frame, a carriage translatable on said frame, a tool supporting head mounted on said car 'iage and having a spindle carrying a rotary tool and driving means therefor, said head "mounted for oscillation to swing the rotary tool to a safety zone, and belt transmission means dependingly supported from and carried by said carriage in driving connection with said rotary tool driving means and housed within said hollow base frame.

In witness whereof. I hereunto subscribe my name, as attested by the two subscribing witnesses.

GEORGE G. KIMMEL. Witnesses CLARENCE B. Fos'rnn, L. A. BECK. 

